Add a tray notification UI for speech input recording in the extension API.

chrome/browser/speech/extension_speech_input_manager.cc

Index: chrome/browser/speech/extension_speech_input_manager.cc
diff --git a/chrome/browser/extensions/speech_input/extension_speech_input_manager.cc b/chrome/browser/speech/extension_speech_input_manager.cc
similarity index 92%
rename from chrome/browser/extensions/speech_input/extension_speech_input_manager.cc
rename to chrome/browser/speech/extension_speech_input_manager.cc
index b8c6bf520686d37818b07b7c2e14781955cb29c5..6460657733ae838cc61d9febcefc285846d2c310 100644
--- a/chrome/browser/extensions/speech_input/extension_speech_input_manager.cc
+++ b/chrome/browser/speech/extension_speech_input_manager.cc
@@ -2,20 +2,24 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/extensions/speech_input/extension_speech_input_manager.h"
+#include "chrome/browser/speech/extension_speech_input_manager.h"
 
 #include "base/bind.h"
 #include "base/json/json_writer.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_event_router.h"
-#include "chrome/browser/extensions/speech_input/extension_speech_input_api_constants.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/browser/profiles/profile_keyed_service_factory.h"
+#include "chrome/browser/speech/extension_speech_input_api_constants.h"
+#include "chrome/browser/speech/extension_speech_input_notification_ui.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/extensions/extension.h"
+#include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_service.h"
 
@@ -118,7 +122,8 @@ ExtensionSpeechInterface::~ExtensionSpeechInterface() {
 ExtensionSpeechInputManager::ExtensionSpeechInputManager(Profile* profile)
     : profile_(profile),
       state_(kIdle),
-      speech_interface_(NULL) {
+      speech_interface_(NULL),
+      notification_(profile) {
   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED,
                  content::Source<Profile>(profile_));
 }
@@ -157,6 +162,7 @@ void ExtensionSpeechInputManager::ShutdownOnUIThread() {
   base::AutoLock auto_lock(state_lock_);
   DCHECK(state_ != kShutdown);
   if (state_ != kIdle) {
+    notification_.Hide();
     BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
         base::Bind(&ExtensionSpeechInputManager::ForceStopOnIOThread, this));
   }
@@ -273,6 +279,20 @@ void ExtensionSpeechInputManager::DidStartReceivingAudioOnUIThread() {
   VLOG(1) << "State changed to recording";
   state_ = kRecording;
 
+  const Extension* extension = profile_->GetExtensionService()->
+      GetExtensionById(extension_id_in_use_, true);
+  DCHECK(extension);
+
+  bool show_notification = !profile_->GetPrefs()->GetBoolean(
+      prefs::kSpeechInputTrayNotificationShown);
+
+  notification_.Show(extension, show_notification);
+
+  if (show_notification) {
+    profile_->GetPrefs()->SetBoolean(
+        prefs::kSpeechInputTrayNotificationShown, true);
+  }
+
   VLOG(1) << "Sending start notification";
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_EXTENSION_SPEECH_INPUT_RECORDING_STARTED,
@@ -402,6 +422,9 @@ void ExtensionSpeechInputManager::DispatchError(
     if (state_ == kShutdown)
       return;
 
+    if (state_ == kRecording)
+      notification_.Hide();
+
     extension_id = extension_id_in_use_;
     ResetToIdleState();
 
@@ -606,9 +629,27 @@ void ExtensionSpeechInputManager::StopSucceededOnUIThread() {
   std::string extension_id = extension_id_in_use_;
   ResetToIdleState();
 
+  notification_.Hide();
+
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_EXTENSION_SPEECH_INPUT_RECORDING_STOPPED,
       // Guarded by the state_ == kShutdown check.
       content::Source<Profile>(profile_),
       content::Details<std::string>(&extension_id));
 }
+
+void ExtensionSpeechInputManager::SetInputVolume(int caller_id,
+                                                 float volume,
+                                                 float noise_volume) {
+  DCHECK_EQ(caller_id, kSpeechCallerId);
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
+      base::Bind(&ExtensionSpeechInputManager::SetInputVolumeOnUIThread,
+      this, volume));
+}
+
+void ExtensionSpeechInputManager::SetInputVolumeOnUIThread(
+    float volume) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  notification_.SetVUMeterVolume(volume);
+}